Explain this NAV behavior

TD · 01-22-2013, 01:51 PM

Locals know the ICC - MD Rt 200. It is a toll highway completed about a year and a half ago. I commute on it daily.

I have now driven a total of two one-way trips on it in the Golf R - one coming home from the dealer right after I bought the car on Saturday and the other my morning commute this morning.

On Saturday, all detail regarding the ICC was displayed on the NAV including speed limit info. This morning, I was driving through fields and forests - but the cross streets and streams I passed over/under were all there.

How can a road disappear from the database? I mean, it's either current or outdated. But how can it flip from one to the other?

If this is relevant (probably not) I was not actually having it navigate on either trip - just display the map.

*Plaz* · 01-22-2013, 02:51 PM

Once you got off that highway, did the map show you on the road again?

My MCS NAV antenna is totally screwed up. It thinks it knows where I am, but doesn't. I think it's just been using dead reckoning for months, and the inaccuracies over time have added up to being several miles off.

Just wondering if you might have a similar situation.

*clyde* · 01-22-2013, 03:05 PM

Quote:

Originally Posted by Plaz

Once you got off that highway, did the map show you on the road again?

My MCS NAV antenna is totally screwed up. It thinks it knows where I am, but doesn't. I think it's just been using dead reckoning for months, and the inaccuracies over time have added up to being several miles off.

Just wondering if you might have a similar situation.

From TD's description, it sounds like it knew exactly where he was but just decided to not show the road he was on this morning. That road is new enough that not all the mapping services show it paved in their aerial/sat imagry (I'm looking at you Apple).

It showed the road for TD a few days ago when he was headed in one direction, but not today when he heads in the other...although it still displayed the car where it was.

That seems weird. Only thing I can think of is that there's some kind of directional screwup? It would explain the behavior, but still be weird.

bren · 01-22-2013, 03:07 PM

Quote:

Originally Posted by clyde

Only thing I can think of is that there's some kind of directional screwup?

That's what i was thinking...or the layer was too far zoomed in/out and for some reason that impacts the data.

John V · 01-22-2013, 03:32 PM

Stupid question, but in the first instance were you on the older part of the road that existed west of Norbeck in ~2010? There was a period of time where my iPhone (old one with google maps) knew about that part of the road but not the newer I-95 to norbeck-ish portion, even though both portions were complete.

Rob · 01-22-2013, 04:16 PM

A reboot might help. You never know - and you get to do it at least twice a trip.

TD · 01-22-2013, 05:30 PM

Quote:

Originally Posted by John V

Stupid question, but in the first instance were you on the older part of the road that existed west of Norbeck in ~2010? There was a period of time where my iPhone (old one with google maps) knew about that part of the road but not the newer I-95 to norbeck-ish portion, even though both portions were complete.

On Saturday, I only took it for the "new" portion - from Rt 29 to Rt 97. The road was on the map the whole way.

I'm curious what it'll do on the way home tonight.

TD · 01-22-2013, 05:30 PM

Quote:

Originally Posted by clyde

From TD's description, it sounds like it knew exactly where he was but just decided to not show the road he was on this morning. That road is new enough that not all the mapping services show it paved in their aerial/sat imagry (I'm looking at you Apple).

It showed the road for TD a few days ago when he was headed in one direction, but not today when he heads in the other...although it still displayed the car where it was.

That seems weird. Only thing I can think of is that there's some kind of directional screwup? It would explain the behavior, but still be weird.

This is exactly what I was attempting to describe.

nate · 01-22-2013, 06:20 PM

I am surprised that you even got the NAV.

Pinecone · 01-25-2013, 03:10 PM

Some Navs have a "base map" that is not quite up to date or up to speed. Updated later maps are loaded on start up. So if the newer, more comprehensive maps don't load for some reason, you are left with the base maps.

I have seen this a couple of times on various Garmins. Either a restart, or it is possible to have dumped the updated maps.

01-22-2013, 01:51 PM	#1
TD Founder emeritus Join Date: Oct 2003 Location: Maryland Posts: 21,007	Explain this NAV behavior Locals know the ICC - MD Rt 200. It is a toll highway completed about a year and a half ago. I commute on it daily. I have now driven a total of two one-way trips on it in the Golf R - one coming home from the dealer right after I bought the car on Saturday and the other my morning commute this morning. On Saturday, all detail regarding the ICC was displayed on the NAV including speed limit info. This morning, I was driving through fields and forests - but the cross streets and streams I passed over/under were all there. How can a road disappear from the database? I mean, it's either current or outdated. But how can it flip from one to the other? If this is relevant (probably not) I was not actually having it navigate on either trip - just display the map.

01-22-2013, 02:51 PM	#2
Plaz ••••••• Join Date: Oct 2003 Carmudgeonly Ride: '11 1M Location: Churzee Posts: 17,741	Once you got off that highway, did the map show you on the road again? My MCS NAV antenna is totally screwed up. It thinks it knows where I am, but doesn't. I think it's just been using dead reckoning for months, and the inaccuracies over time have added up to being several miles off. Just wondering if you might have a similar situation. __________________ 2011 1M

01-22-2013, 06:20 PM	#9
nate Oh, are they? Join Date: Oct 2003 Carmudgeonly Ride: S4 Location: H-town Posts: 10,282	I am surprised that you even got the NAV. __________________ "People keep saying I'm crazy as hell, but sooner or later they're going to realize I know what I'm talking about." - Charles Barkley

01-25-2013, 03:10 PM	#10
Pinecone Carmudgeon Join Date: Dec 2004 Location: Maryland Posts: 2,717	Some Navs have a "base map" that is not quite up to date or up to speed. Updated later maps are loaded on start up. So if the newer, more comprehensive maps don't load for some reason, you are left with the base maps. I have seen this a couple of times on various Garmins. Either a restart, or it is possible to have dumped the updated maps. __________________ Terry Carraway 2002 Topaz E46 M3 2000 Dakar M Roadster 1995 Alpine E36 M3 LTW 1990 Red/White Spec Racer

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01-22-2013, 03:32 PM	#5
John V No more BMWs Join Date: Apr 2005 Carmudgeonly Ride: Ram, MS3, CX-5, RX-8 Location: Glenwood, MD Posts: 14,753	Stupid question, but in the first instance were you on the older part of the road that existed west of Norbeck in ~2010? There was a period of time where my iPhone (old one with google maps) knew about that part of the road but not the newer I-95 to norbeck-ish portion, even though both portions were complete.

01-22-2013, 04:16 PM	#6
Rob The user formerly known as rwg Join Date: Oct 2003 Carmudgeonly Ride: Z4 Location: Vegas baby! Posts: 8,261	A reboot might help. You never know - and you get to do it at least twice a trip.